webmail.siristainlessalloy.th.com has no NS records.
NS records for this zone are defined at siristainlessalloy.th.com.
NS records for this zone are defined at siristainlessalloy.th.com.
Question and response
Question
dig webmail.siristainlessalloy.th.com. NS
Answer
The response has no answer records.
Authority
siristainlessalloy.th.com. 900 SOA ns1.ksc.net. admin.ns.ksc.co.th. 20 10800 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0